PlantsGlaucidium→Japanese Wood Poppy (Glaucidium palmatum)

Botanical names:
Glaucidium palmatum Accepted
Glaucidium palmatum var. leucanthum Synonym

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Partial Shade to Full Shade
Soil pH Preferences: Moderately acid (5.6 – 6.0)
Minimum cold hardiness: Zone 3 -40 °C (-40 °F) to -37.2 °C (-35)
Maximum recommended zone: Zone 7a
Plant Height: 18 to 24 inches (45-60 cm)
Plant Spread: 18 to 24 inches (45-60 cm)
Flowers: Showy
Flower Color: Mauve
White
Bi-Color
Bloom Size: 2"-3"
Flower Time: Summer
Propagation: Seeds: Suitable for wintersowing
Awards and Recognitions: RHS AGM

detail of fully matured seed pod, twin pods open up back-to-back,

Photo gallery:
Location: Massachusetts gardenDate: October 20, 2019detail of fully matured seed pod, twin pods open up back-to-back,
By AntMan01
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By AntMan01
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Location: Pequannock, NJDate: 2009-10-06Ripe seed head.
By LorettaNJ
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By AntMan01
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Location: Massachusetts gardenDate: October 20, 2019Mature fully ripened seed collected on October 18, 2019
By AntMan01
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Location: Tohno-Furusato-mura(museum), Tohno-shi(city) Iwate-ken(Prefecture), JapanDate: 2010-05-15Photo courtesy of:TANAKA Juuyoh
By admin
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Photo Courtesy of Shikoku Garden Inc.
By Joy
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Location: Mt. Iide, Fukushima pref., JapanPhoto courtesy of:Qwert1234
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Photo courtesy of:brewbooks
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Photo Courtesy of Lazy S'S Farm Nursery.
By Joy
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Photo Courtesy of Lazy S'S Farm Nursery.
By Joy
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Photo Courtesy of Shikoku Garden Inc.
By Joy
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Photo Courtesy of Shikoku Garden Inc.
By Joy
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Comments:
Posted by CarolineScott (Calgary - Zone 4a) on Nov 1, 2014 9:41 AM

Dr. Deno's research had this germinating in two weeks when GA-3 was used.
An article in the NARGS Rock Garden quarterly Fall 1991 volume 49 #4 suggests a concentration of 500 ppm GA3.

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Discussion Threads about this plant
Thread Title Last Reply Replies
What seeds do you have going so far? by carlysuko May 14, 2018 9:27 AM 86
What Perennials are you ordering 2018? by ge1836 Sep 17, 2018 3:23 PM 63
Overwinter peony in pots by ol434445 Nov 25, 2018 10:00 PM 59
Watching snow fall by CarolineScott Nov 17, 2020 10:24 AM 46
NARGS members seed exchange by CarolineScott Dec 13, 2019 10:44 AM 53
suggestions for shade by Frillylily Apr 19, 2015 8:04 AM 5

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